$wi:600px;
$hei:340px;
a{
  text-decoration: none;
}
.content{
  width: $wi;
  height: $hei;
  overflow: hidden;
  margin-left:400px ;
  #banner{
    width:$wi ;
    height: $hei;
    position: relative;
    overflow: hidden;
    #list{
      position: absolute;
      width:$wi;
      height: $hei*6;
      z-index: 1;
      a{
        width: $wi;
        height: $hei;
        overflow: hidden;
        img{
          width: $wi;
          height: $hei;
        }
      }
    }
    #buttons{
      position: absolute;
      bottom: 20px;
      right: 30px;
      z-index: 3;
      span{
        display: block;


        width: 10px;
        height: 10px;
        border-radius: 50%;
        float: left;
        background: red;
        margin-left: 4px;
        border: 1px solid #38f8d7;
        &.on {
          background: #38f8d7;
          border: 1px solid red;
        }
      }
    }
    #prev,#next{
      display: none;
      width: 30px;
      height: 45px;
      text-align: center;
      line-height: 45px;
      z-index: 4;
      position: absolute;
      top: 150px;
      color: white;
      background: red;
      &:hover{
        background: #666;
      }
    }
    #prev{
      right: 20px;
    }
    #next{
      left:20px
    }
    &:hover{
      #prev,#next{display: block;}
    }
  }
}